Paper-supply attachment for type-writers.



L. JENSEN.

PAPER SUPPLY ATTACHMENT FOR TYPE WRITERS. APPLICATION FILED JAN-31.1916.

1,243,942. Patented Oct. 23,1917.

4 SHEETS-SHEET I.

L. JENSEN.

PAPER SUPPLY ATTACHMENT FOR TYPEwmTERs. APPLICATION .FILED JAN. 31.1916.

1,243,942.. Patented 00$. 23,1917.

4 SHEETS-SHEET 2.

Z Julian/Z317 L.JENSEN. PAPER SUPPLY ATTACHMENT FOR TYPE WRITERS.

APPLICATION FILED JAN. 3|. I916.

Patented Oct, 23,1917.-

4 SHEETS-SHEET 3.

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L. JENSEN. PAPER S UPPL'Y ATTACHMENT FOR TYPE WRITERS.

APPLICATION FILED JAN- 31, T916- 1 ,Q%3,9 Patented Oct; 23, 1917.

4 SHEETS-"SHEETv 4.

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LOUIS JENSEN, OF CHICAGO, ILLINOIS, ASSIGNOR T0 UNITED AUTOGRAPI-IIGREGISTER COMPANY, OF CHICAGO, ILLINOIS, A CORPORATIQN OF ILLINOIS.

PAPER-S'UYPLY ATTACHMENT FOB TYPE-WRITERS.

Specification of Letters Patent.

Patented 0st. 23, 191 '1.

Application filed January 31, 1916. Serial No. 75,273.

To all whom it may concern:

Be it known that I, LoUIs JENSEN, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented new' and useful'Improvements in Paper-Supply Attachments forType-Writers, of which the following is a full, clear, and exactdescription.

My invention relates to improvements in attachments used in connectionwith typewriting machines for supplying a continuous web of paper to theplaten carried by the reciprocable carriage, and particularly to theattachments for which Letters Patent of the United States were ranted toE. J. Barker, May 25,1915, 0; 1,140,493, and which maintains a hangingslack portion of the continuous web.

In the attachments covered by said patent the motion of the platen wastransmitted to the supply-rollers for maintaining the slack of paper fedthereto by mechanism that was carried by and added considerable weightto the carriage of the typewriter and was directly and permanentlyconnected to transmission devices which included parts that had to bepulled along by and reciprocated synchronously with said carriage.

The principal object of my present invention is to materially reduce thecomparatively great weight heretofore placed upon and carried by thecarriage, and to absolutely remove the resistance to its movement by theabove mentioned synchronously movable parts. It is a further object ofmy invention to provide means for adjusting the relative movements ofthe platen and said supply-rollers. These and other objects I accomplishby the means hereinafter fully described, and as particularly pointedout in the claims.

In the drawings: I

Figure 1 is aplan view of a typewriting machine and its support to whichmy improvements are applied.

Fig. 2 is a rear elevation thereof with the lower portion of saidsupport broken away.

Fig. 3 is a side elevation of said typewrit-- ing machine and a portionof its support with the ink ribbon-reels and mechanism for actuating thesame ehmmated.

Fig. 4 is a perspective view of the carriage shifting lever andmechanism actuated thereby for rotating the platen and transmittingmotion to the supply-rollers, detached from the machine.

Fig. 5 is a transverse section of the platen removed from the machine,and taken on dotted line 5-5, Fig. 1.

Fig.6 is a horizontal section of a portion of said machine, taken ondotted line 6, 6, Fig. 8, looking in the direction indicated by thearrows.

Fig. 7 is a vertical longitudinal section of a portion of said machinetaken on dotted line 7-7, Fig. 2, and showing the supplya rollermechanism in side elevation.

Fig; 8 is a detail View showing mechanism for adjusting the throw of thedevices for rotating the supply-rollers.

Fig. 9 is a detail view of a fragment of said improved machine.

Referring to the drawings, A represents the stationary supporting-frameof a typewriting machine of any suitable design, and B represents thetransversely reciprocable carriage in the side-frames of which a platenC is. journaled. The journal X of this platen at its right hand endextends through its bearings and has a ratchet c securely mountedthereon, and immediately next this ratchet c,- it has an arm a pivotallymounted thereon which projects upward and forward slightly." This arm isprovided with a downward extension 6 below its pivot, and the lower endedge of this extension terminates below the peripher of ratchet c, andis, referably, made to escribe a curve struck rom the center of itspivot, or from a center slightly oflset therefrom, substantially asshown in Fig. 5 of the drawings.

Immediately next this arm a a bell-crank v and fastened to the stud uponwhich the pawl is pivoted and the other end of which forward movementextends to and bears upward against a pin 9. The bel -crank constitutesthe, medium through which reciprocable motion is im parted to the pawl,and the throw of this reciprocal movement is such that the point of thepawl as it approaches the limit of its curved edge of extension I) andengage the teeth of pawl e, and by adjusting the rotatable movement ofarm a said pawl will, during its forward movement, pass beyond the edgeof the extension and. engage the teeth of ratchet c and impart a greateror less degree of circular movement thereto and thus turn the platen toobtain the space between the lines of the typewritten matter desiredoThe bell-crank has its rear uppermost angle to the end of a rocking-barE, which is securely mounted at a suitable point between its ends uponthe rear end of a superposed horizontal rockshatt ll, the axis of whichis substantially at right angles to the axis of the platen. Thisrock-shaft, which is present in mosttypewriting machines, and is.usually used at the end of the right hand reciprocal throw of thecarriage to impart the necessary movement of the platen to advance thepaper, and at the same time move the carriage back to the right handthrow of its reciprocation, is journaled insuitable bearing G, Whichlatter may be of any desired construction and permanently secured to theside-frame of the carriage in some man-- ner or other. The forward endof this rockshaft extends beyond its bearings a suitable distance and isusually bent downward. to form a hand-grasp for the operator, an isusually termed the spacing-lever.

The end of rocking-bar 1E opposite link D is connected, through themedium of a link H to the adjacent forward extension 10 of one of theparallel end members 12 of a horizontal pressure-bar 13, which latterextends parallel to the platen at the rear of the carriage, and from endto end of the same, and has its parallel end members 12 extend forwardand suitably secured to the ends of a rock-shaft let journaled in theends of the side-frames of the carriage. When rock-shaft F is rocked,rocking-bar E thereon pushes extension 10 of the adjacent end member 12upward through the medium of link H, and the pressure-bar'ld movesdownward and engages an anti-triction roller 17 journaled on a studprojecting forward from the end of one branch of the rocking-beam l5.

Rocking-beam 15 is arranged in the direction of length of thepressure-bar, and it is fulcrumed mediate its ends to the upper end of astationary standard 16 that is secured to and arises from the rear ofsupportingframe A of the machine, The branch of will ride beyond the alink D connecting naaaeea this rocking-beam carrying the anti-frictionroller 17 is kept normally pressing upward toward the pressure-bar 13 bymeans of a spring 18 that has one end permanently secured to standard 16and its opposite end bearing upward against theunderside or said branchof the rocking-beam. The end of the rocking-beam opposite roller 16 isconnected by means of a depending connecting-rod 19 to the pivotal pin21 of a pawl 20, and this pivotal pm 21 projects laterally from an arm22, the opposite end of which isloosely mounted on the extended and oila journal 23 of a feed-roller2d, which latter has bearings in the endsof hangers 25 secured to and extending rearwardly from. the ends of arock-shaft 26 that is journaled in suitable bearings in the overhang 2*?projecting rearwardly from the upper ends of parallel upright-members28, 28, of the rackframe, in the rearwardly and downwardly projectingbrackets 29 of which the paperrolls 30 are journaled from which thepaper 1s supplied to the platen.

Shaft 26 extends parallel to the axis of feed-roller 24:, and when pawl20 is given an upward movement by connectin rod 19 the outer pointed endof saidpawl engages a ratchet 31, which latter is securely mounted uponthe adjacent extended end of the jour nal of roller 2%, and moves saidroller Roller 24 has-its central portion slightly increased in diameterand knurled, and this knurled portion engages a superposed feedroller32, whose ends are j ournaled in brackets 33 that are secured to or madeintegral with the rear portion of overhang of uprights 28 of therack-frame.

lldtl There are usually several rolls of paper 30 ournaled in therack-frame, and the Webs thereof. are run upward to and betweenfeedrollers 2d and 32, and in order to facilitate the separation of thelower roller 24 from the upper roller 52, when it is desired to threadthe webs of paper from rolls 30 between them, T have provided arock-shaft 34 which is parallel to rock-shaft 26 and'is,

journaled in the overhangs 27 of the rack. One extended end of shaft 34-has a crank 35 secured thereto, and the opposite extended end of thisshaft 34: is provided with a symmetrical pear-shaped cam 36,substantially as shown in Fig. 3 of the drawings. This cam engages theunder upwardly inclined edge of a forward extension 3'7 of the 25 androller 24 being normally naaaeaa shaft 26 and having one end securelyfastened to this shaft and its opposite end movably retained againstshaft 34.

The end of the journal of roller 23 oppo site ratchet 31 extends throughits bearings naled in a hanger 42 depending from the underside of thetop 43 of the table upon which the stationary frame of the typewritingmachine is mounted. These portions 40 and 4:1 and their associated partsafi'ord a means whereby the paper may be manually caused to be unwoundfrom their rolls to produce the required slack between them and theplaten.

In order to regulate the throw of connecting-rod 19 and the movement ofsupplyroller 24 actuated thereby, T-have provided means that engage theunderside of the branch of rocking-beam 15 opposite that in. which theantid riction wheel 17 is journaled, and limit the downward movementthereof. These means comprise a segmental gage-plate t4, the lower endof which is ivoted to the standard 16 at a suitable point below thefulcrum of the rocking-beam, substantially as shown in Fig. 8 of thedrawings. The curvature of the upper end edge 45 of this plate is struckfrom a center whose radius is the same as the center of length thereofis from the pivotal pins of the gageplate, but is eccentric to saidpivotal axis, so that when the gage-plate is pushed forward the uppereccentric edge thereof will push against the under edge of said branchof the rocking-beam and limit the downward movement thereof. At each endof this upper edge 45 there are upwardly projecting studs 46, 46, thatlimit the reciprocations of the gage-plate, and about midway its lengththe rear edge thereof is provided with a segmental slot 47 which isstruck from its pivotal axis, and a screw 49, tapped laterally throughthe standard, passes through this slot and has a thumb-nut 4:8 screwedonto its'end, which is manipulated to clamp the gage-plate and retain itin any position to which it may be adjusted. For convenience inmanipulating this gage-plate, I have provided it with a lug 50 proecting rearwardly from its rear edge, but this may be dispensed with, ifdesired.

What I claim as new is: p

1. The combination in a typewriting machine with the reciprocablecarriage, a platen journaled therein, means for rotating said laten, aroller having stationary bearings independent of the carriage upon whicha roll of paper is mounted, mechanism movable with said carria e andactuated by said means, and devices for rotating said roller that aresupported independently of said carriage and are depressed'by saidmechanism when said platen is rotated.

52. The combination in a typewriting ma chine with the reciprocablecarriage, a platen journaled therein, means for rotating said platen,mechanism movable with said carriage and actuated by said means wherebya web of paper is fed from a roll to said platen, and devices forrotating said roll which are supported independently of and normallydisconnected from said carriage and depressed by said mechanism whensaid platen is rotated.

3. The combination in atypewriting machine with the reciprocablecarriage, a platen journaled therein, means for rotating said platen,and a pressure-bar actuated by said means, whereby a web may befed froma roll of paper journaled independently of said carriage to said platen,and devices for rotating said roll which are supported independently ofsaid carriage but normally disconnected therefrom and are actuated bysaid pressure-bar when said platen is rotated.

4:. The combination in a typewriting machine with the reciprocablecarriage, a platen journaled therein, means for rotating said platen,and mechanism movable with said carriage and actuated by said means,whereby a web of a roll of paper may be fed to said platen, andadjustable devices for rotating said roll which are supportedindependently of and normally disconnected from said carriage anddepressed by said mechanism when said platen is rotated.

5. The combination in mechanism of the lrind specified with areciprocable carriage, a platen journaled therein, means for rotatingsaid platen, and a pressure-bar actuated by said means, whereby a web ofa roll of paper journaled independently of said carriage may be fed tosaid platen, a rockingbeam one end of which is actuated by saidpressure-bar when said platen is rotated, and

mechanism actuated by said rocking-beam for rotating said roll when theplaten is ro-. tated.

6.. The combination in mechanism of the kind specified with areciprocable carriage, a platen journaled therein, a pressure-barextending horizontally back of and parallel to said carriage, andmechanism for simultaneously rotating said platen and depressing saidbar, whereby a web of a roll of paper 'journaled independently of saidcan riage may be fed to said platen, and devices depressed by said barand adapted to rotate said roll simultaneously with said platen.

7. The combination in mechanism of the kind specified with;areciprocable carriage, a platen journaled therein, a pressure-barextending horizontally back of and parallel to said carriage, andmechanism for simultaneously rotating said platen and depressing saidbar, of means whereby a web of, a roll of paper journaled independentlyof said carriage may be fed to said platen, and a rocking-beam depressedby said bar, and means actuated by and adapted to rotate said rollsimultaneously with said platen.

8. The combination in mechanism of the kind specified with areciprocable carriage, a platen journaled therein, a pressure-barextending horizontally back of and parallel to said carriage, andadjustable mechanism for simultaneously rotating said platen anddepressing said bar, of means whereby a web of a roll of paper journaled independently of said carriage may be fed to said platen, anddevices depressed b said bar and adapted to rotate said rollsimultaneously with said platen.

9. The combination in mechanism of the kind specified with areciprocable carriage, a platen journaledtherein, a pressure-barextending horizontally back of and parallel to said carriage, andadjustable mechanism for simultaneously rotating said platen and deressing said bar, of means whereby a we of a roll of paper journaledindependently of said carriage may be fed to said platen, and adjustabledevices depressed by said bar and adapted to rotate said rollsimultaneously with said platen.

10. The combination in mechanism of the kind specified with areciprocable carriage, a platen journaled therein, a pressure-barextending horizontally back of and parallel to said carriage, andmechanism including a ratchet secured on the journal of said platen, anadjustable arm loosely mounted on said journal alongside said ratchet,and a pawl engaging the lower eccentrically curved edge of an extensionof said arm as it advances to engage said ratchet for simultaneouslyrotating said platen and depressing said bar, and devices depressed bysaid bar and adapted to simultaneously feed a sheet of paper to saidplaten.

11. The combination in a machine of the kind specified with areciprocable carriage, a platen journaled therein, means for rotatingsaid platen, and a pressure-bar which is depressed when said platen isrotated, of a rocking-beam one branch of which is adapted to be engagedby said pressure bar, adjustable means "for limiting the rockingmovement of said beam, a pair of feedrollers between which a web ofpaper passes in transit to the platen, and devices actuated by saidrocking-beam for rotating said rollers.

12. The combination in a machine of the kind specified with areciprocable carriage,

a platen journaled therein, means for rotating said platen, and apressure-bar which is depressedwhen said platen is rotated, oi arocking-beam one. branch or" which is naespaa adapted to be engaged bysaid pressure-bar, a pair of feed-rollers between which a web of paperpasses in transit to the platen, and

devices actuated by said rocking-beam for rotating said rollers.

13. The combination in a machine of the kind specified with areciprocable carriage, a platen journaled therein, means for rotatingsaid platen, and a pressure-bar which is depressed when said platen isrotated, of a rockin beam which is adapted to be engaged by saidpressure-bar when said platen is rotated, a pair of feed-rollersjonrnaled independently of said carriage one of which is adapted to bemoved out of engagement with the other, means whereby a web of a roll ofpaper journaled independently of said platen mayextend between saidrollers and from thence to said platen, and devices for imparting motionfrom said rockingbeam to said rollers.

14:. The combination in a machine of the kind specified. with areciprocable carriage, a platen journaled therein, means for rotatingsaid platen, and a pressurebar which is depressed when said platen isrotated, of a rocking-beam which is adapted to be engaged by saidpressure-bar when said platen is rotated, a pair of feed-rollersjournaled independently of saidcarriage, a ratchet on the journal of oneof said rollers, a pawl engaging the same, a connecting-rod fortransmitting the motion of said rockingbeam to said pawl, means wherebya web of a roll of paper journaled independently of said platen mayextend between said rollers.

and from thence to said platen.

15. The combination in a machine ofthe 1 kind specified with areciprocable carriage, a platen journaled therein, means for rotatingsaid platen, and a pressure-bar which is depressed when said platen isrotated, of a rocking-beam which is adapted to be engaged by saidpressure-bar when said platen is rotated, a pair offeed-rollersjonrnaled independently of said carriage, simulta neously movablehangers in which the lower roller has bearings, a ratchet on the journalof said last-mentioned roller, an arm loosely mounted thereon, a pawlpivoted to said arm and engaging said ratchet, a connecting-rodconnecting said rocking-beamand pawl, means whereby a web of a roll ofpaper journaled independently of said carriage may extend between saidrollers and,

from thence to said platen.

16. The combination in a machine of the kind specified with areciprocable carriage, a platen j ournaled therein, means for rotatingsaid platen, and a pressure-bar which is depressed when said platen isrotated, of a rocking-beam which is adapted to be engaged by saidpressure-bar when said platen is rotated, adjustable means for limitingthe rocking movement of said beam, a pair of feed-rollers journaledindependently of said carriage, simultaneously movable hangers in whichthe lower roller has bearings, a ratchet on the journal of saidlast-mentioned roller,

. an arm loosely mounted thereon, a pawl pivoted to said arm andengaging said ratchet, a connecting-bar connecting said rocking-beam andpawl, means whereby a web of a roll of paper journaled independently ofsaid carriage may extend between 10 said rollers and from thence to saidplaten.

In witness whereof I have hereunto set my hand this 20 day of January,1916.

LOUIS J NSEN. Witnesses: I

. W. R. BARKER, H. P. BARKER.

